What is closed and not closed please explain, thank u

Astore manager records the total visitors and sales, in dollars, for 10 days. the data is shown in the scatter plot. what conclusion can the store manager draw based on the data? question 3 options: an increase in sales causes a decrease in visitors. an increase in sales is correlated with a decrease in visitors. an increase in visitors is correlated with an increase in sales.

Lisa has three classes that each last 50 minutes. what is the total number of minutes of the three classes

Find the cosine function that is represented in the graph.